Charlie Duke joins Buzz Aldrin Walt Cunningham Edgar Mitchell and Al Worden on the stage.

At the Apollo/Saturn V Center at NASA's Kennedy Space Center in Florida, Apollo astronaut Charlie Duke (far right) joins Buzz Aldrin, Walt Cunningham, Edgar Mitchell and Al Worden on the stage at NASA's 40th Anniversary of Apollo Celebration of the July 1969 launch and landing on the moon. Eight Apollo astronauts participated in the ceremony. Duke served as lunar module pilot on Apollo 16 in 1972. He and astronaut John Young set a record of 72 hours and 14 minutes on the lunar surface. Photo credit: NASA/Kim Shiflett